Which two firewall ports must be opened for the anchor controller to operate properly with a foreign controller for guest access?

Which two firewall ports must be opened for the anchor controller to operate properly with a
foreign controller for guest access? (Choose two.)

A.
ports 16666 and 16667 for controller traffic

B.
port 97 for EoIP traffic

C.
port 80 for HTTP traffic

D.
port 69 for TFTP traffic

Explanation: